Halloween spooky eyes
Arduino sketch for 2 blinking LED 'eyes'
I have tested this with an Adafruit Pro Trinket successfully.
You can adjust some parameters at the top of the sketch to easily tweak your effects:
// LED pins
int led = 5;
int led2 = 6;
// Max and min brightness
int maxBrightness = 250;
int minBrightness = 0;
// Blink fade amount
int fadeOutAmount = 5; // how many points to fade the LED by
int fadeInAmount = 15;
// Blink speed range (in milliseconds)
int blinkSpeedMin = 150;
int blinkSpeedMax = 1500;
// Max and min times to blink each iteration
int maxBlinks = 4;
int minBlinks = 1;
// Max and min stare time (in seconds):
int maxStare = 9;
int minStare = 3;
// Max and min sleep time between blinks (in seconds):
int maxSleep = 25;
int minSleep = 7;If you want to get really fancy, you can craft your own enclosures -- or just use a toilet paper roll, some duct tape, and some parchment paper to great effect... like this (but don't use 9v batteries -- they kind of suck for this type of thing. I recommending using a USB battery charger):
